CN-121987922-A - Guiding catheter for interventional therapy

Abstract

The invention relates to a guide catheter for interventional therapy, belongs to the technical field of medical instruments, and solves the problems that the existing guide catheter is easy to slip from an inlet of a coronary artery, easy to interfere normal flow of blood and incapable of dynamically regulating and controlling the anchoring length. The invention comprises a guide catheter body and an anchoring device mounted on the guide catheter body for anchoring the guide catheter body at the coronary access to reduce the risk of the guide catheter slipping off the coronary access. According to the invention, the guide catheter body is stably anchored at the coronary artery inlet through the anchoring device, so that the risk of the guide catheter slipping from the coronary artery inlet is reduced, the operation difficulty of an interventional instrument entering the coronary artery through the guide catheter is further reduced, and the operation safety and the operation efficiency are improved.

Inventors

• ZHANG RUITAO
• WU YINGQIAN
• RUAN SHAN

Assignees

• 北京大学第三医院（北京大学第三临床医学院）

Dates

Publication Date

20260508

Application Date

20260318

Claims (10)

1. 1. A guiding catheter for interventional therapy, characterized by comprising a guiding catheter body (1) and an anchoring device (2), the anchoring device (2) being mounted on the guiding catheter body (1), the anchoring device (2) being adapted to anchor the guiding catheter body (1) at the coronary entrance to reduce the risk of the guiding catheter slipping off the coronary entrance.
2. 2. A guiding catheter for interventional therapy according to claim 1, characterized in that the anchoring device (2) comprises an anchoring means (21), the anchoring means (21) being located at the front end of the guiding catheter body (1), the anchoring means (21) being used for anchoring the front end of the guiding catheter body (1) at the coronary entrance.
3. 3. A guide catheter for interventional therapy according to claim 2, characterized in that the anchoring means (21) comprises an anchor (211), the anchor (211) being mounted at the front end of the guide catheter body (1), the anchor (211) being used for anchoring the front end of the guide catheter body (1) at the coronary artery inlet.
4. 4. A guide catheter for interventional therapy according to claim 3, characterized in that the anchor (211) comprises an anchor balloon insertable into the coronary inlet, the expansion and contraction of the anchor balloon being controlled by inflating or deflating the anchor balloon to control the anchoring and release of the front end of the guide catheter body (1) at the coronary inlet.
5. 5. A guide catheter for interventional therapy according to claim 4, characterized in that the anchoring means (21) further comprises a support body (212), the support body (212) being mounted at the front end of the guide catheter body (1), the support body (212) being adapted to mount and provide support for an anchoring balloon.
6. 6. A guide catheter for interventional therapy according to claim 5, wherein the support body (212) comprises a support sleeve for mounting an anchoring balloon and providing radial support.
7. 7. A guiding catheter for interventional therapy according to any of claims 3-6, characterized in that the anchoring device (2) further comprises an anchoring control mechanism (22), the anchoring control mechanism (22) being located at the rear end of the guiding catheter body (1) and being connected to the anchoring mechanism (21), the anchoring control mechanism (22) being adapted to control the anchoring and release of the anchoring mechanism (21) from the coronary access opening.
8. 8. A guide catheter for interventional therapy according to claim 7, wherein the anchoring control mechanism (22) comprises an air tap (221), an air circuit (222) and a pressure regulating valve (223).
9. 9. The guiding catheter for interventional therapy according to claim 8, wherein the air channel (222) is embedded in the wall of the guiding catheter body (1), one end of the air channel (222) is communicated with the anchoring air bag, the other end of the air channel is connected with the air tap (221), and the pressure regulating valve (223) is installed in the air channel (222) in series.
10. 10. A guide catheter for interventional therapy according to claim 9, wherein the anchoring control mechanism (22) further comprises a display balloon mounted in series on the air path (222), the display balloon being in communication with the anchoring balloon, the display balloon being adapted to display the volume change of the anchoring balloon simultaneously in real time.

Description

Guiding catheter for interventional therapy Technical Field The invention relates to the technical field of medical instruments, in particular to a guide catheter for interventional therapy. Background In cardiac coronary interventions (such as percutaneous coronary interventions PCI), the guiding catheter acts as an instrument delivery channel and an operating platform, the stability of which at the coronary entrance directly determines the safety and effectiveness of the procedure. In interventional operation, the front end of the guide catheter is required to be embedded into the coronary artery inlet and to be axially fixed, while the traditional guide catheter is manually maintained by an operator, so that the operation difficulty of medical staff is increased, the risk that the guide catheter slips from the coronary artery inlet during operation is increased, and the operation safety and the operation efficiency are reduced. Disclosure of Invention In view of the above, the present invention is directed to a guiding catheter for interventional therapy, which is used for solving one of the problems that the existing guiding catheter is easy to slip from the coronary artery entrance, easy to interfere with the normal flow of blood, and unable to dynamically regulate the anchoring length. The aim of the invention is mainly realized by the following technical scheme: a guide catheter for interventional procedures comprising a guide catheter body and an anchoring device mounted on the guide catheter body for anchoring the guide catheter body at a coronary access to reduce the risk of the guide catheter slipping off the coronary access. Further, the anchoring device comprises an anchoring mechanism at the front end of the guiding catheter body for anchoring the front end of the guiding catheter body at the coronary artery inlet. Further, the anchoring mechanism includes an anchor mounted at the forward end of the guide catheter body for anchoring the forward end of the guide catheter body at the coronary artery inlet. Further, the anchor includes an anchor balloon insertable into the coronary access opening, the anchor balloon being inflated or deflated to control the expansion and contraction of the anchor balloon, thereby controlling the anchoring and release of the forward end of the guide catheter body at the coronary access opening. Further, the anchoring mechanism further comprises a support body mounted at the front end of the guide catheter body for mounting and providing support for the anchoring balloon. Further, the support body includes a support sleeve for mounting the anchoring balloon and providing radial support. Further, the anchoring device also comprises an anchoring control mechanism which is positioned at the rear end of the guiding catheter body and is connected with the anchoring mechanism, and the anchoring control mechanism is used for controlling the anchoring and releasing of the anchoring mechanism and the coronary artery inlet. Further, the anchoring control mechanism comprises an air tap, an air path and a pressure regulating valve. Further, the air channel is embedded in the pipe wall of the guide pipe body, one end of the air channel is communicated with the anchoring air bag, the other end of the air channel is connected with the air tap, and the pressure regulating valve is installed in the air channel in series. Further, the anchoring control mechanism further comprises a display air bag, the display air bag is installed on the air path in series, the display air bag is communicated with the anchoring air bag, and the display air bag is used for synchronously displaying the volume change of the anchoring air bag in real time. The technical scheme of the invention can at least realize one of the following effects: (1) The invention discloses a guiding catheter for interventional therapy, which comprises a guiding catheter body and an anchoring device, wherein the anchoring device is arranged on the guiding catheter body and is used for stably anchoring the guiding catheter body at an entrance of a coronary artery so as to reduce the risk of the guiding catheter slipping from the entrance of the coronary artery and further reduce the operation difficulty of an interventional instrument entering the coronary artery through the guiding catheter, thereby improving the operation safety and the operation efficiency. (2) The anchoring air bag is of a multi-section annular structure, the anchoring air bag comprises a plurality of mutually communicated inflation cavity sections, each inflation cavity section is distributed at intervals along the circumferential direction of the supporting sleeve, channels are arranged on the supporting sleeve between adjacent inflation cavity sections, and a non-closed annular supporting structure is formed through the channels, so that the coronary artery inlet is kept smooth, blood can continuously flow through the channels, and the interference o